The count_entries function in pdf-layer.c in Artifex Software, Inc.

published 2017-04-03 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-1406

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

The count_entries function in pdf-layer.c in Artifex Software, Inc. MuPDF 1.10a allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted PDF document.

Patch / fix

distros 1

mupdf openSUSE Tumbleweed 1.18.0-1.7

opensuse advisories openSUSE-SU-2024:11068-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-10221 updated 2025-11-21 cvss 3.3

mupdf: count_entries function in pdf-layer.c allows stack consumption

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-16)

Exploit prediction

1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugs.ghostscript.com https://bugs.ghostscript.com/show_bug.cgi?id=697400 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

bugs.ghostscript.com /show_bug.cgi?id=697400
exploit, issue-tracking
security.gentoo.org /glsa/201706-08
vendor-advisory
ghostscript.com /cgi-bin/findgit.cgi?2590fed7a355a421f062ebd4293df892800fa7ac

Sources

CVE List CVE-2016-10221
NVD CVE-2016-10221

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary